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 TM 9-4120-425-14&P
DIRECT SUPPORT MALFUNCTION/SYSTEM INDEX Continued
0046-00
TROUBLESHOOTING
MALFUNCTION/SYMPTOM
PROCEDURE
Insufficient Cooling
1.
Bad filter-drier
2.
Expansion valve obstructed or damaged
3.
Insufficient refrigerant or leaks
4.
Faulty compressor
5.
Excess refrigerant
Compressor Runs But Does Not Cool
1.
Improper power supply
2.
Excessively high temperature in conditioned area
3.
Faulty Compressor
4.
Low refrigerant charge
5.
High discharge pressure
6.
Faulty liquid solenoid valve
Compressor Excessively Noisy
1.
Low suction line temperature
2.
Overcharge of refrigerant
3.
Improper power supply
Suction Pressure Too Low
1.
Faulty expansion valve
2.
Bad filter-drier
Suction Pressure Too High
1.
Defective solenoid valve
2.
Broken or loose louver cables
3.
Defective actuator cylinder
4.
Faulty expansion valve
0046-00-2
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